Question: What was the album that Joni Mitchell won the Grammy for Best Traditional Pop Vocal Album for?
Paraphrase: Joni Mitchell won the Grammy for Best Traditional Pop for which vocal album for?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q205721 p:P166 ?s . ?s ps:P166 wd:Q280481 . ?s pq:P1686 ?value}